Re: Did the authors of "anchor modeling" plagiarize several new theories that are related to general database theory?

Dana subota, 26. listopada 2019. u 08:13:14 UTC+2, korisnik vldm10 napisao je:
> Dana ponedjeljak, 29. travnja 2019. u 02:27:45 UTC+2, korisnik vldm10 napisao je:
> > I will answer on the question in the title of this topic with examples of
> > specific theories.
>
> C. J. Date wrote the following text in his book:
> Definition:
> Relvar R is in 6NF if and only if it satisfies no nontrivial JDs at all.
>
> Equivalently a "regular" relvar is in 6NF if and only if it consists of a single key,plus at most one additional attribute.
>
> In fact, the above definition is not even a definition. C.J. Date informs readers of his book that he calls "6NF" relations that have only a key and one attribute.
>
> ---------------------------------------------------------------------------------------------------------------
> However, what is only important about one-attribute-key data relations is how to get those data relations and C. J. Date says nothing about it.
> ---------------------------------------------------------------------------------------------------------------
>
> What is written in the „definition of 6NF“ - that is what everybody knows that atomic data structures consist of a key and one attribute. Because of this explanation about 6NF, in my opinion, the authors of 6NF are bluffing that they have solved atomic data structures.
>
> I have shown with examples on this user-group that "Anchor Modeling" has major and system errors. These mistakes made by the authors of "Anchor Modeling" were due to a lack of understanding of the important things in my work, that they plagiarized.
>
> What is unusual and completely strange is that the authors of "Anchor modeling" put in the title of their paper the following text: "using the Sixth Normal Form".
> Title of this paper that won the first prize at the World Congress is as follows:
> „Anchor Modeling An Agile Modeling Technique using the Sixth Normal Form for Structurally and Temporally Evolving Data.“
>
> Let's mention that 6NF belongs to the "Relational Model". However, "Anchor Modeling" is not a Relational Model. Once again, let us mention that 6NF is just a name introduced by C. J. Date.
>
> Vladimir Odrljin

Since relations are built of tuples, Date & Darwen define term tuple precisely in the following way: "Tuple value" is a set of n ordered triples of the form <Ai, Ti, vi>, where Ai is an atribute name, Ti is type name, and vi is value of type Ti.

However their „the running example“ has relvar S, relvar P and relvar SP. However, in my opinion, there are huge „mess“ here. For example, S# is not an attribute. In my database theory S# is identifier of the entity. In my database theory attributes belong to semantic theory. Identifiers belong to the identification theory. Note that I defined the identification theory in my papers.

Vladimir Odrljin Received on Mon Oct 28 2019 - 06:44:44 CET